Testing arbitrary YUM repos

[mizdebsk]

As it was already discussed briefly, it would be nice if Koschei could test contents of arbitrary repos specified by user before changes are included in Fedora proper.

Possible workflow:

• User builds some packages somewhere and generates YUM repo (this can be easily done in Copr).
• User asks Koschei to test his YUM repo against specified collection.
• Koschei gets contents of user-provided YUM repo and checks which distro packages build-depend on changed packages and therefore should be tested (this may require repo resolution, but only against Koji)
• Koschei creates new Copr project, adds user-provided YUM repo and Koji repo (with specific repo_id) as external repos, sets build group contents to match Koji build group and submits package rebuilds, using Koji SRPM URLs.
• User can use Copr interface (web/CLI/API/fedmsg) to monitor build statuses.

[mizdebsk]

Sharing some PoC Python code I have for creating Copr project and runing a build: https://gist.github.com/mizdebsk/a53208cf62aff5c327caacbac712a390

[mizdebsk]

Note that "custom-1" chroots are currently only available at Copr development instance

[msimacek]

Implemented in 1.9.0